[snowman]

To reitterate an earlier post of mine I would have suggested to heat the stud, not the case.

Why?? well because of all the previously noted concerns about damaging the case.

Propane will not do the job, it will not get the stud hot enough.

Heat the stud until it just turns red, Per Bob W above. The reason you cannot do this to the case is that is will not turn color and suddenly melt on you. Once the stud has turned red you can be assured that the loctite bonds that have been holding the stud in place are GONE, broken. The stud, after cooling a bit, will back out easily.

The case sucks so much heat out that heating just the stud is a pretty safe method. The stud gets red, the case is much much cooler and will not be damaged. If you heat the case at the base, it will certainly work, but you run the risk of overdoing it and having a meltdown.